< > BotCompany Repo | #1004349 // nfilter - count objects in collection that match a predicate

JavaX fragment (include) [tags: use-pretranspiled]

Libraryless. Click here for Pure Java version (1748L/11K).

static <A> int nfilter(Iterable<A> c, IF1<A, Bool> pred) {
  ret nfilter(pred, c);
}

static <A> int nfilter(IF1<A, Bool> pred, Iterable<A> c) {
  int n = 0;
  if (c != null) for (A o : c)
    if (pred.get(o))
      ++n;
  ret n;
}

static int nfilter(Iterable c, O pred) {
  int n = 0;
  if (c != null) for (O o : c)
    if (isTrue(callF(pred, o)))
      ++n;
  ret n;
}

static int nfilter(O pred, Iterable c) {
  ret nfilter(c, pred);
}

Author comment

Began life as a copy of #1003524

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